code snippet (20250417,21)

  // if(p.x > .5 || p.y > .5) col.r = .8;
  if(max(p.x, p.y) > .5) col.r = .8;
  // col.r = step(.5, max(p.x, p.y));

  float a = radians(45.);
  vec2 n = vec2(sin(a), cos(a));
  float d = dot(uv, n);
  d = abs(d);
  col += smoothstep(fwidth(d), 0., d-.001);

function prepareOneFish() {
  let start = new Date().getTime();
  while (new Date().getTime() < start + 1000) {
    // preparing fish
  }
}

function setTimeoutPromise(delay) {
  return new Promise((resolve, reject) => {
    setTimeout(resolve, delay);
  });
}

function setTimeoutPromise(delay) {
  return new Promise((resolve) => setTimeout(resolve, delay));
}